Calendar-clock.



PATENTED MAY 8, 1906.

B. TERRELL.

CALENDAR CLOCK.

APPLIOATION FILED APR.15,1905.

2 SHEETS-SHEET 1 R 0 TI N E V m EZaZTer-rell ATTORN EYS Ammzw s. mmumallw n mommmmns. msmncmn. n. c.

PATENTED MAY 8, 1906.

2 SHEETS-SHEET 2 am 0 9 1 5 wm m n EC D R E AH EDP T 0 RBI T A A0 m P PA UNITED STATES PATENT OFFICE.

CALENDAR-CLOCK.

Specification of Letters Patent.

ratented May 8, 1906.

Application filed April 15, 1905- Serial No. 255,682.

T0 at whom it may concern.-

Be it known that I, ELAH TERRELL, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Indicating Mechanism forCalendar-Clocks, of which the following is a specification.

My invention relates to a new and useful improvement in calendar-clocks,and more especially to the indicating mechanism.

The object of the invention is to provide a mechanism of simpleconstruction whereby the month, day, hour, and minute will be indicatedcorrectly and one in which the num ber of parts is reduced to a minimumand the whole device constructed so as to be produced in a compact andconvenient form.

Finally, the object of the invention is to provide a mechanism of thecharacter described that will be strong, durable, and eflicient, simpleand comparatively inexpensive to make, and one in which the severalparts will not be liable to get out of working order.

With the above and other objects in view the invention consists of thenovel details of said line, the transfer mechanism and a portion of itssupports being shown in elevation. Fig. 3 is an elevation of theleft-hand end of the mechanism with reference to Fig. 1. Fig. 4 is anelevation of the opposite or righthand end. Fig. 5 is an elevation takenon the line y y of Fig. 2 and looking in the direction of the arrow.Fig. 6 is a transverse sectional view taken on the line 2 z of Fig. 1looking in the direction of the arrow and showing some of the parts inelevation. Fig. 7 is an elevation on the line a a of Fig. 1 looking inthe direction of the arrow. Fig. 8 is a side elevation of themonth-wheel-retaining dog, and Fig. 9 is an elevation taken on the lineb b of Fig. 1 and looking in the direction of the arrow 0. Fig. 10 is afront elevation of the minute-wheel shown in connection with anescapement and driving-gear. Fig. 11 is an end elevation showing theanchor-escapement and clock-gear. Fig. 12 is a detail sectional viewshowing the transfer mechanism. Fig. 13 is a side elevation of thehour-wheel and one of the pinions. Fig. 14 is a view of thelongitudinally-movable pins.

In the drawings the numeral 1 designates the main or driving-shaft, onthe opposite ends of which are vertically-arranged arms 2. Between thearms four wheels 3, 4, 5, and 6, respectively, are mounted. Thesewheels, beginning with the right-hand wheel 3, constitute the minute,hour, day, and month indicating devices or wheels, respectively. Theminute-wheel 3 has arranged on its periphery suitable numerals forindicating each five minutes in the hour, the numerals starting with 5and ending with 55. On the outer or right-hand side of the wheel 3 Iform concentric with the shaft 1 an esoapementwheel 7, which is providedwith an anchor 7 operated by the clockworks in any approved manner, andbetween the escapement-wheel and the right-hand arm I arrange a pinion8, formed integral with or secured to the escap ement and the minutewheel. This pinion is connected to the driving-train of thehereinbefore-mentioned clockworks through the gear-wheel 8, so thatmotion will be imparted to the minute-wheel. By this arrange ment theminute-wheel is caused to revolve intermittently. These intermittentmovements are timed so as to occur every five minutes, thus giving thewheel 4 intermittent movements to each complete revolution, the numeralsbeing so arranged as to indicate the correct time as the wheel moves. Onits opposite side the minute-wheel 3 carries a short pin 9, Fig. 7,adapted to engage a star-wheel 10, which projects a short distancebetween the minute Wheel 3 and the hour-wheel 4, which is next adjacentthereto. The starwheel 10 is mounted on a shaft 1 1, supported above thewheels in the upper ends of the arms 2. This star-wheel, which acts as apart of the transfer mechanism, has a width greater than the length ofthe proj ecting portion of the pin 9, so as to be engaged on itsopposite side by one of the pins 12 of the hour-wheel 4, it beingunderstood that the pins 12 and the in 9 are of such length as toreadily pass eac other, but engage with the star -wheel. The peripheryof the hourwheel 4 is provided with the numerals 1 to 24/ indicating thetwenty-four hours of the day, or, if it is desired, two sets of numeralseach. running from 1 to 12 may be employed. However, the hour-wheel musthave twenty-four intermittent movements to every complete revolution,and therefore I provide twentyfour oi the pins 12, between the uppermosttwo of which one of the points of the star-wheel always projects, andthus it is apparent that when the minute-wheel 3 has completed a fullrevolution, which it does every hour, the pin 9 will engage with thelowermost point of the star-wheel and move the same so as to transmitmotion to the hour-wheel and cause it to move one twentyfourth of itsrevolution, indicating that one hour has passed, and the next point ofthe star-wheel will be moved downward between the next succeeding pins12, thus preventing further movement or the hour-wheel until the minute-wheel has completed another revolution.

Between the hour-wheel 4 and the daywheel 5 I arrange on the shaft 11 asecond star-wheel 13, similar to the star-wheel 10 and filling the spaceand projecting between the wheels, as in the case 01'' the firststarwheel 10. It will be apparent that the daywheel 5, carrying on itsperiphery the thirtyone numerals of the longest months, must be movedintermittently thirty-one times to every complete revolution, so as toindicate a day at each movement. Therefore on the side of the day-wheeladjacent to the hour-wheel I arrange thirty-one pins 14, similar to thepins 12 and adapted to engage with the second star-wheel 13 in a similarmanner. The hour-wheel 4 is provided with a pin 15, which also engageswith the star-wheel, so that every time the said pin passes thestar-wheel the same will be moved one point, and thus move the day-wheelone intermittent movement or one thirty-first of a revolution. Betweenthe day-wheel 5 and the monthwheel 6 I arrange on the shaft 1.1 a dog16, which has sufficient thickness to till the space between the saidwheels. The month-wheel 6 is formed on its periphery with the propersymbols indicating the twelve months and is provided 011 its sideadjacent to the daywheel with twelve short pins 17, similar to the pins14 and 12, so as to provide means for giving to the month-wheel twelveintermittent movements to everyrevolution, and thus indicating thechange in the month at every intermittent movement. These pins projectonly partially across the space between the day-wheel and themonth-wheel, so as to engage with the dog 16 and yet pass withoutinterference with a single pin 18 projecting from the adjacent side ofthe day-wheel 5 and also engaging with the dog 16. For imparting motionto the month-wheel I provide the same near its center with an annularrecess 1 9, in which is arranged a coiled spring 20, having one of itsends secured to the month-wheel and its oppositeend secured to therighthand arm2. The spring being wound, the month-wheel is held againstrotation by the dog 16, which is provided on. its side adjacent to thesaid month-wheel with an inclined shoulder 21.,which, owing to the factthat the lower end of the dog which is provided with the said shoulderis heavier, will cause the said shoulder to be positioned in the path ofone of the pins 17 which abuts the same. The dog 16 is formed at itsopposite or upper end with a rounded boss or enlargement 22, whichnormally lies above and out of the path of the pin 17. As the day-wheel5 is moved around once in every complete revolution, the pin 18 engageswith the lower end of the dog 16 and riding along the same forces orswings the dog upward, thus swinging the shoulder 21 out of the path ofthe pin 17 and allowing the spring 20 to revolve the monthwheel. Themonth-wheel is prevented from moving or being moved more than a twelfthof a revolution by the boss 22 which, when the dog is swung upward bythe pin 18, is forced downward, so as to provide a stop against whichthe nearest adjacent pin moving toward the stop abuts, and the said pin17 riding along the rounded surface of the boss 22 swings the dogupward, so as to swing its end carrying the shoulder 21 downward andinto the path oi the next succeeding pin 17, and thus preventing furthermovement of the month-wheel.

It is obvious that as the months of September, April, June, and Novemberhave thirty days and the month of February twentycight days, exceptduring leap-year, and the other months having thirty-one days someprovision must be made for causing the month-wheel to be moved at theproper time. To accomplish this, I arrange in the monthwheel transverseor lateral plungers 23 and an elongated plunger 24. T hc se plungers arearranged equidistant from. the center of the wheel and inside of thepins 17. The plungers 23 are so spaced as to be brought into operationat the end of a thirty-day month and the plunger 24 is positioned so asto operate at the end of the month of February, which ordinarily hastwenty-eight days. It will be apparent that no special construction willhave to be brought into operation at the end of the months containingthirty-one days, as the day-wheel is arranged to indicate thirty-onedays and to have thirty-one intermittent movements indicating a day ateach movement. The plungers 23 and 24 extend entirely through themonth-wheel and are each provided with a curved end 25 adj acent to theday-wheel 5. The plungers normally project slightly beyond and to theleft of the month-Wheel, but not far enough to bind against theleft-hand arm-2, although passing in close proximity to the inner sideof the same. The said arm 2 is provided with a slight rounded boss 26,disposed in the path of the plungers so that when the latter are swunginto contact with the boss 26 they will be moved laterally ortransversely through the numeral-wheel, so as to cause their roundedends 23 to project beyond the right-hand side of the month-wheel and inclose proximity to the left-hand side of the day-wheel. Of course it isto be understood that the boss 26 is of such length and proportions asto cause only one plunger to operate at a time. A loose pin 27 ismounted to slide laterally in the day-wheel and having such length as tobe en aged and forced to the ri ht by one of the p ungers 23 or 24 whent e same are moved to the right by the boss 26. The hourwheel on itsside adjacent to the day-wheel is provided with two slight depressions28 and 29, so disposed as to receive the free end of the loose pin 27when the same is moved to the right. It will be apparent that when theplunger is out of engagement with the boss 26 there will be no ressureon the loose pin 27, and the same wil l readily ride out of either ofthe depressions 28 or 29,- thus allowing the wheels to moveindependently. However, when one of the plungers is engaged with theboss 26 the day-wheel, moving around the loose pin 27, will ride up onthe rounded end 25 of the plunger, and thus be forced into engagementwith one of the depressions 28 or 29, thereby locking the hour-wheel andthe day-wheel together, so that as lon as the loose pin engages with theplunger t e hourwheel and the day-wheel will have equal movements ormove together. By this arrangement every time the hour -wheel is movedone hour the day-wheel is moved one day. When one of the plungers 23engages with the boss 26, the loose pin 27 will bedriven into thedepression 29, and the parts will be so arranged that this will occurwhen the thirtieth day of the month arrives or when the numeral 30appears at the indicatingpoint. The rounded ends 25 of the plungers 23are of such length as to lock the day-wheel and the hour-wheel to etherfor one hour. Thus the day-wheel wil be moved with the hour-wheel so asto bring the numeral 1 of the first day of the month into View at theindicating-opening, (not shown,) when the plunger will ride off of thepin and allow the same to ride out of the depression 29 and the parts tooperate in their normal manner. The depression 28 is always encounteredby the pin 27 or the depression 29; but the pin will not be locked inthe depression 28 except when the plunger 24 arrives opposite the boss26, which, owing to the increased width or length of its end, will forcethe pin 27 into the depression 28 and lock the day-wheel and hourwheeltogether for three hours, so as to cause the numerals 29, 30, and 31 tomove past the indicating-opening (not shown) and the nu- Ineral 1brought into view, when the plunger will ride out of contact with thepin 29 and allow the same to pass out of the depression 28. This latteroperation, it will be understood, occurs only at the end of the month ofFebruary.

Having now fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. In a time-indicating mechanism, the combination with a minute-wheel,an hourwheel provided in its side with a depression, a day-wheel and amonth-wheel, and a fixed projection supported in juxtaposition to themonth-wheel, of a plurality of plungers carried by the month-wheeladapted to intermittently engage with the fixed projection, a pincarried by the day-wheel and arranged to be engaged by one of theplungers and forced into engagement with the depression of thehour-wheel to lock the hour-wheel to the daywheel when the said plungerengages with the fixed projection.

2. In a time-indicating mechanism, a daywheel formed on its peripherywith symbols for indicating the days in each month and provided with aprojection on its side, a month-wheel provided on its periphery withsymbols for indicatin the twelve months of the year and provide on itsside adjacent to the day-wheel with twelve projections adapted tointermittently aline with the projection of the day-wheel, meansconnected to the month-wheel for imparting motion thereto, and a devicearranged between the said wheels normally standing in the path of one ofthe projections of the month-wheel to hold the same against rotation andadapted to be enga ed by the projection of the day-wheel to re ease themonth-wheel to allow the same a partial movement, but so constructed andarranged as to prevent the month-wheel from moving more than a twelfthof a revolution.

.3. In a time-indicating mechanism, a plurality of wheels comprising aday-indicating wheel havin depressions in its side, an hour indicating weel carrying a sliding in adapted to engage in the depressions of thedaywheel and a month-indicating wheel carrying a plurality of plungersso positioned as to operate at the end of the months of April, June,November and September and an elongated plunger so positioned as tooperate at the end of the month of February, and means associated withthe month-wheel to operate the plungers at the ends of the months ofApril, June, November and September to cause the sliding pin to enga ein one of the depressions of the hour-whee to lock the said wheel andthe day-wheel together for simultaneous IIO movement and also' tooperate the elongated In testimony whereof I affix my signature plungerat the end of the month of February 111 presence of two wltnesses. tocause the slldlng pm to engage Wlth one of the other depressions in thehour-Wheel to ELAH TERRELL' 5 ck the said Wheel and the day-Wheel to-Witnesses:

gether for a prolonged simultaneous move- A. L. PI-IELPs,

ment. M. B. SOHLEY.

